Dear student, We can provide you with the solution of 4 sub question at a time.
11) Empirical rule states that exactly 68.27%, 95.45% and 99.73% of the values lie within one, two and three standard deviations of the mean, respectively for normal distribution.
A) answer is 68.27%
B) normal distribution is symmetric hencw percent of data within mean and 2 SD above the mean is %
C) The percentage of data towards the tail of 2 Standard deviation away from the mean is
normal distribution is symmetric hence percentage of data that is more than 2 SD above the mean =%
12)
A) The percentage of these students scored more than 88 on the test is %
B) The percentage of these students scored less than 64 on the test is
in percentage it is 15.87%
C)
in percentage 47.72%
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what...
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